摘要
为了提高苏里格气田苏48区块主力层的天然气开发利用效果,综合薄片鉴定、压汞、扫描电镜、图像粒度分析等方法,对该区主力层盒8上、盒8下、山1段的砂体储集性能进行研究及分类评价。研究认为:主力层段砂岩的储集空间以溶蚀孔隙为主,残余粒间孔隙次之;物性较差、孔喉小、分选不好,总体上属于低孔低渗的石英砂岩储集层,并以Ⅱ类和Ⅲ类储层为主。储集性能的好坏在很大程度上受沉积微相的制约,其中盒8下段的心滩储集性能最好,是今后最有利的开发层段,山1段次之,盒8上段最差。
This paper studies and evaluates the properties of the main sandstone reservoirs of upper He-8,lower He-8 and Shan-1 members by integrating methods of thin section analysis,mercury penetration,scanning electron microscopy and image grain size analysis in order to improve natural gas exploitation in Su-48 block of Sulige gas field.The result shows that the sandstone reservoir space of the principal layers is dominated mainly by dissolution pores,then by residual intergranular pores;the reservoirs are characterized by poor petrophysical property,small pore throat and poor sorting,generally belong to low porosity and permeability quartz sandstone reservoirs,and mostly fall in Class-II and Class-III reservoirs.Reservoir property largely depends on sedimentary microfacies.The channel bar of lower He-8 has the best reservoir property,is the most favorable target interval,the next is Shan-1,and the last is upper He-8.
出处
《特种油气藏》
CAS
CSCD
2010年第3期31-34,共4页
Special Oil & Gas Reservoirs
基金
长庆油田公司勘探开发研究院科研项目"苏里格气田苏48区块储层地质早期评价"(00083088)
